Aside from Married...with Children, Roseanne, and maybe The Hogan Family, nuclear family sitcoms in the late 1989s and 1990s were dismally heterosexist, with not even a "gay friend comes out" episode to relieve the monotony of "Look, all boys are obsessed with girls!" The Wonder Years (1988-93) was the flagship of a Wednesday-night lineup that included the awful Growing Pains and Doogie Houser, so I didn't watch often.
The Monster Squad ), an obnoxious older sister, Karen (Olivia D'Abo) and -- though he was only 12 years old at the beginning of the series, a girlfriend named Winnie (Danica McKellar).
Summer of 42 ("In Every Man's Life, there is a Summer of '42").
The epilogue reveals that Kevin didn't marry Winnie, but he did marry a woman. As the adult Kevin concludes his story, his 10-year old son approaches to ask him to "play catch" outside. His heterosexual destiny has reached its fulfillment in reproduction, and, to boot, his son is "all boy," a masculine stereotype, as if to reiterate that no gay people exist.
There are also a few dreamy guys hanging around (such as Josh Blake of Alf) for the heterosexual girls and gay boys to gaze at.